U.S. Geological Survey, National Wetlands Research Center (NWRC), and U.S. Department of Agriculture Natural Resource Conservation Service (NRCS)20010307Digital Overlay for Soils of Iberville Parish, Louisiana.Vector Digital DataLafayette, Louisiana, USUSGS, Biological Resources Division NWRCThis data set contains vector line map information. The vector data contain selected base categories of geographic features, and characteristics of these features, in digital form. The information was collected by digitizing and/or scanning soil information complied onto 7.5 minute quadrangle mylar sheets, creating an editable, digital soil coverage. The data set used 1:24000 scale hardcopy USGS standard quadrangle maps and the State Soil Survey of Iberville Parish as a data development resource. The classified data was derived from actual field identification and sampling performed by the Natural Resource Conservation Service (NRCS), in Alexandria, Louisiana (formerly Soil Conservation Service). Digital data is available by Parish. The digital data is not Soil Survey Geographic database (SSURGO) certified.To provide digital overlays of the soils of Louisiana by parish for the NRCS, that can be updated and used as a layer in a GIS application.2000020220010305Publication date of sourcesCompleteIrregular-91.750-91.01930.49830.025NoneVector line dataSoilsDigital DataARC/INFONRCSParishDepartment of Commerce, 1990, Counties and Equivalent Entities of the United States, its Possessions, and Associated Areas (Federal Information Processing Standard 6-4): Washington, Department of Commerce, National Institute of Standards and Technology.LouisianaLouisiana Coastal ZoneIberville ParishNone2000It is strongly recommended that this data is directly acquired from the distributor described above or from another USGS Biological Resources Division server and not indirectly through other sources which may have changed the data in some way. The distributor makes no claims as to the data's suitability for other purposes.Acknowledgement of the U.S. Geological Survey, National Wetlands Research Center as a data source would be appreciated in products developed from these data, and such acknowledgment as is standard for citation and legal practices for data source is expected by users of this data. Sharing new data layers developed directly from these data would also be appreciated by U.S. Geological Survey, National Wetlands Research Center staff. Users should be aware that comparison with other data sets for the same area from other time periods may be inaccurate due to inconsistencies resulting from changes in mapping conventions, data collection, and computer processes over time. The distributor shall not be liable for improper or incorrect use of this data, based on the description of appropriate/inappropriate uses described in this metadata document. These data are not legal documents and are not to be used as such.U.S. Geological Survey, Biological Resource Division, National Wetlands Research CenterSteve HartleySenior Geographer/GIS AnalystMailing and Physical Address700 Cajundome BoulevardLafayetteLouisiana70506USA337-266-8543337-266-8616steve_hartley@usgs.gov8:00 am to 4:00 pm CST Monday through FridayThe U.S. Geological Survey, National Wetlands Research Center acknowledges the NRCS for use of data derived from the SSURGO soils maps for Iberville Parish, Louisiana.Digitizing was performed in Production ARC/Edit, an adaptation of ARC/Edit module. Scanning was performed on the IDEAL, FSC 8010 Color Scanner utilizing CADImage_Scan+Feature version 1.0 software and I_Vector version 3.81 for vectorization. Editing and labeling was performed in ARC/INFO version 7+ and ArcView, version 3.x software. The computer operating system platform was UNIX and/or Windows NT.The accuracy is not based on a formal quantitative assessment and was based on the judgement of the soil conservationist in the field. Ground truthing was not performed for this project. To attain a better estimate of accuracy, a formal re-evaluation of the soils of Iberville Parish, Louisiana would be necessary to see if there are areas where discrepancies exist.All polygons are closed, and have been cleaned in an editing environment. Adjacent polygons do not have identical attributes. Each polygon has one and only one attribute.All data sets were derived in the same general format. All soil information was transferred onto transparent mylar sheets, for each topographic quadrangle in the parish, from the existing State Soils Survey for the parish. Mylar overlays were digitized (entered at an error of less than .005 for geographic positioning) and/or scanned then rectified. Each quadrangle mylar overlay was digitized and/or scanned separately and therefore may represent different amounts of human and/or equipment error. Parish coverage quadrangles land-water interfaces were corrected by best judgement on-screen digitizing to Digital Orthophoto Quarter Quadrangles (DOQQ's), if available. For parishes created before DOQQ's were available, the land-water interfaces were included on the mylar sheets. For parishes created after DOQQ's became available, the land-water interfaces were digitized on-screen separately from the soil lines; therefore they are not included on the mylar sheets. The land-water coverages and soil line coverages were then appended and cleaned to create the total quadrangle coverage. Each quadrangle was edited individually, and then all quadrangles in the parish were joined together. Once joined together, editing was done along all quadrangle boundaries to match lines and labels. When line or label errors were found, all corrections were made upon approval of the NRCS. Problems with labeling occurred along adjoining parish boundaries, due to different labeling conventions in each parish. A standard labeling convention system for the whole state of Louisiana must be created to remedy the problem. Until this standard is developed, the following labeling tactics have been used. New labels were created for parish coverages in order to match labels for adjoining parishes. Changes were dependent upon soil definition, polygon size, and cases of duplication problems. A duplication problem means the label already existed in the parish coverage and is a different unit altogether and therefore can not be added to that legend. New labels were also created when new lines were needed to reduce confusion. Lines were added in special cases: 1) if it was advantageous to extend an unit a small portion into the next parish, rather than renaming the whole polygon; and 2) if the two units adjoining are similar, differing only in transitional phase, then a line was added at the most logical area of transition, aided by imagery, in order to keep the two units separate. New labels were created in the coverages which the line was added as long as there was not duplication problems. If major complications occurred when trying to add labels, these areas were left as is, waiting for a standard soil convention. These problems can be fixed after a standard Louisiana State soil code convention is established. The attribute legend for Iberville Parish is found in the Entity and Attribute Section. This includes current modifications for completeness with surrounding parishes. All changes to the Iberville Parish soils lines and legend are documented in a report to be stored with the state soils archives at the NRCS in Alexandria, LA. Modifications to the Iberville Parish legend include the following: Changed the definition of CS, to match East Baton Rouge; Changed the definition of CV, to match St. Martin 1; FU was changed to FE; Added UD, for levees. A few soil code names have been modified to those soil names that lie below the Louisiana thermal line, changes in Iberville include: Sharkey to Schriever and Commerce to Cancienne.Not applicableNot applicableUnited States Department of Agriculture (USDA), in cooperation with the Louisiana Agricultural Experiment Station.UnknownSoil delineated aerial photographyRemote-sensing imageAlexandria, LouisianaUSDA, NRCS24000Stable-based Material1970010119900101Date of source materialUSDA MapSpatial and Attribute information for soil units.USDA, NRCS, in cooperation with Louisiana Agricultural Experiment Station and Louisiana Soil and Water Conservation Committee.19770901Soil Survey of Iberville Parish, LouisianaDocumentAlexandria, LouisianaUSDA, NRCS20000Paper1970010119900101Date of source materialUSDA, NRCSSecondary attribute information for soil units.Earth Observation Satellite Company (EOSAT)199301011993 Landsat TM ImageryColor Digital Imagery (Raster)Lanham, MDEOSATDigital Imagery19930101Publication Date of ImageEOSATData for land cover/land use classificationSatellite Pour L'Observation de la Terre (SPOT)19900101 - 19950101SPOT Imagery1990-95Black and White Digital Imagery (Raster)Toulouse, FranceSatellite Pour L'Observation de la Terre (SPOT)Digital Imagery1990010119950101Publication date of ImageSPOTData for land cover/land use classificationNational Digital Orthophoto Program (NDOP).19981125Digital Orthophoto Quarter Quadrangles (DOQQ)1996Color Digital Imagery (Raster)Fort Worth, TexasUSDA, NRCS, and National Cartography and Geospatial Center.Digital Imagery1998011019981125Publication date of ImageDOQQData for land cover/land use classificationThe following is a generalized description of the processes used in creating the parish soil digital coverages for Louisiana. Data for some parish soil maps may vary slightly. The data set was compiled by taking the original soil lines drawn over aerial photography by NRCS and transferring them to 7.5 minute quadrangle mylar sheets with a scale of 1:24,000 aided by the most accurate and available imagery. Soil lines were compiled by NRCS until 19990501, compilation after this date was performed at the U. S. Geological Survey, National Wetlands Research Center, first utilizing TM/Spot merge imagery for a short period until digital orthophoto quarter quadrangles (DOQQ's) became available. When DOQQ's became available, on-screen land-water interfaces for every quadrangle were constructed before soil lines were compiled. Soil lines were compiled over DOQQ imagery including the digital land-water interface lines for reference. Soil lines for each quadrangle were then digitized and/or scanned individually and appended to their corresponding land-water interface coverage. All quadrangles once appended and cleaned were joined together to form a single parish coverage. For parishes where land/water interface lines were created over TM/SPOT merge land cover imagery, actual aerial photography was referred to for questionable areas. DOQQ imagery is the main backdrop utility for most coverages, except for those parishes created before 20000101 or where DOQQ's are still not available, in which case TM/SPOT Merge was utilized. On-screen and tablet digitizing was done using Production ARC/Edit, an adaptation of ESRI's ARC/Edit module. Scanning was performed on the IDEAL, FSC 8010 Color Scanner utilizing CADImage_Scan+Feature version 1.0 software and I_Vector version 3.81 for vectorization. The ARC/EDIT module was used for coverage generation with geospatial data, building, cleaning, and joining coverages. Polygons were assigned attributes, as labels, in ARCVIEW. The information is stored both as an ARC/INFO coverage and an exported .e00 compression file.1998The State of LouisianaVectorUniversal Transverse Mercator15.9996-930500,0000Coordinate Pair.61.61MetersNorth American Datum of 1983GRS 19806378137.0298.257SoilsA natural, three-dimensional body at the earth's surface. It is capable of supporting plants and has properties resulting from the integrated effect of climate and living matter acting on earthy parent material, as conditioned by relief over periods of time.USDA, NRCS, and Soil Survey of Iberville Parish.soil_codeCodes for soil unitsSoil Survey for Iberville Parish, Louisiana: NRCS, in cooperation with Louisiana Agricultural Experiment Station and Louisiana Soil and Water Conservation Committee. Alexandria, Louisiana, USDA.BABarbary AssociationSoil Survey for Iberville Parish, Louisiana: NRCS, in cooperation with Louisiana Agricultural Experiment Station and Louisiana Soil and Water Conservation Committee. Alexandria, Louisiana, USDA.CcCancienne (Commerce) Silt LoamSoil Survey for Iberville Parish, Louisiana: NRCS, in cooperation with Louisiana Agricultural Experiment Station and Louisiana Soil and Water Conservation Committee. Alexandria, Louisiana, USDA.CeCancienne (Commerce) Silty Clay LoamSoil Survey for Iberville Parish, Louisiana: NRCS, in cooperation with Louisiana Agricultural Experiment Station and Louisiana Soil and Water Conservation Committee. Alexandria, Louisiana, USDA.CnConvent Silt LoamSoil Survey for Iberville Parish, Louisiana: NRCS, in cooperation with Louisiana Agricultural Experiment Station and Louisiana Soil and Water Conservation Committee. Alexandria, Louisiana, USDA.COConvent Soils, Occasionally FloodedSoil Survey for Iberville Parish, Louisiana: NRCS, in cooperation with Louisiana Agricultural Experiment Station and Louisiana Soil and Water Conservation Committee. Alexandria, Louisiana, USDA.CSConvent (and robinsonville) Soils, Frequently FloodedSoil Survey for Iberville Parish, Louisiana: NRCS, in cooperation with Louisiana Agricultural Experiment Station and Louisiana Soil and Water Conservation Committee. Alexandria, Louisiana, USDA.CVConvent Soils, Frequently FloodedSoil Survey for Iberville Parish, Louisiana: NRCS, in cooperation with Louisiana Agricultural Experiment Station and Louisiana Soil and Water Conservation Committee. Alexandria, Louisiana, USDA.FAFausse AssociationSoil Survey for Iberville Parish, Louisiana: NRCS, in cooperation with Louisiana Agricultural Experiment Station and Louisiana Soil and Water Conservation Committee. Alexandria, Louisiana, USDA.FE (FU)Fausse SoilsSoil Survey for Iberville Parish, Louisiana: NRCS, in cooperation with Louisiana Agricultural Experiment Station and Louisiana Soil and Water Conservation Committee. Alexandria, Louisiana, USDA.SaSchriever (Sharkey) Silty Clay LoamSoil Survey for Iberville Parish, Louisiana: NRCS, in cooperation with Louisiana Agricultural Experiment Station and Louisiana Soil and Water Conservation Committee. Alexandria, Louisiana, USDA.ScSchriever (Sharkey) ClaySoil Survey for Iberville Parish, Louisiana: NRCS, in cooperation with Louisiana Agricultural Experiment Station and Louisiana Soil and Water Conservation Committee. Alexandria, Louisiana, USDA.ShSchriever (Sharkey) Clay, Gently UndulatingSoil Survey for Iberville Parish, Louisiana: NRCS, in cooperation with Louisiana Agricultural Experiment Station and Louisiana Soil and Water Conservation Committee. Alexandria, Louisiana, USDA.SkSchriever (Sharkey) Clay, Frequently FloodedSoil Survey for Iberville Parish, Louisiana: NRCS, in cooperation with Louisiana Agricultural Experiment Station and Louisiana Soil and Water Conservation Committee. Alexandria, Louisiana, USDA.SSSchriever (Sharkey) Soil, Occasionally FloodedSoil Survey for Iberville Parish, Louisiana: NRCS, in cooperation with Louisiana Agricultural Experiment Station and Louisiana Soil and Water Conservation Committee. Alexandria, Louisiana, USDA.SYSchriever (Sharkey) and Fausse SoilsSoil Survey for Iberville Parish, Louisiana: NRCS, in cooperation with Louisiana Agricultural Experiment Station and Louisiana Soil and Water Conservation Committee. Alexandria, Louisiana, USDA.TuThibaut (Tunica) ClaySoil Survey for Iberville Parish, Louisiana: NRCS, in cooperation with Louisiana Agricultural Experiment Station and Louisiana Soil and Water Conservation Committee. Alexandria, Louisiana, USDA.UDUdorthentsSoil Survey for Iberville Parish, Louisiana: NRCS, in cooperation with Louisiana Agricultural Experiment Station and Louisiana Soil and Water Conservation Committee. Alexandria, Louisiana, USDA.VaVacherie Silt LoamSoil Survey for Iberville Parish, Louisiana: NRCS, in cooperation with Louisiana Agricultural Experiment Station and Louisiana Soil and Water Conservation Committee. Alexandria, Louisiana, USDA.waterWaterSoil Survey for Iberville Parish, Louisiana: NRCS, in cooperation with Louisiana Agricultural Experiment Station and Louisiana Soil and Water Conservation Committee. Alexandria, Louisiana, USDA.The data set consists of vectorized data for the 19 quadrangles in Iberville Parish. Each polygon in the coverage has been assigned a corresponding soil code. The Parish's quadrangles can be found in the "Louisiana Index to topographic and other Map Coverage", published and distributed by the USGS, National Mapping Program. The description of soil codes can be found in the Soil Survey of Iberville Parish.Soil Survey of Iberville Parish, published by the USDA, NRCS, and the Louisiana Index to topographic and other Map Coverage, Published and distributed by the USGS, National Mapping Program.U.S. Geological Survey, National Wetlands Research CenterSteve HartleySenior Geographer/GIS AnalystMailing and Physical700 Cajundome Blvd.LafayetteLouisiana70506USA337-266-8543337-266-8616steve_hartley@usgs.gov8:00 am to 4:00 pm CST Monday through FridayNRCS Soil Maps for Iberville ParishAlthough these data have been processed successfully on a computer system at the U.S. Geological Survey, National Wetlands Research Center, no warranty expressed or implied is made regarding the accuracy or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. This disclaimer applies both to individual use of the data and aggregate use with other data. It is strongly recommended that these data are directly acquired from a Biological Resources Division server, and not indirectly through other sources which may have changed the data in some way. It is also strongly recommended that careful attention be paid to the contents of the metadata file associated with these data. U.S. Geological Survey, National Wetlands Research Center shall not be held liable for improper or incorrect use of the data described and/or contained herein. So, these data are provided "as is" and without any express or implied warranties, including, without limitation, the implied warranties or merchantability and fitness for a particular purpose. Also, use of trade names or commercial products in this metadata is solely for the purpose of providing specific information, and does not imply recommendation or endorsement by the US Government. Any downloading and use of these data signifies a user's agreement to comprehension and compliance of the U.S. Geological Survey, Nationa Standard Disclaimer. Insure all portions of metadata are read and clearly understood before using these data in order to protect both user and U.S. Geological Survey, National Wetlands Research Center interests.ARCE7.1.0ARC/INFO .e00 compression fileunknownNone, if available on-lineNot available2001030620010926Joan C. KesterU.S. Geological Survey, National Wetlands Research CenterGeographerMailing and Physical Address700 Cajundome BlvdLafayetteLA70506USA337-266-8611337-266-8616joan_kester@usgs.gov8:00 am to 4:00 pm CST Monday through FridayContent Standard for Digital Geospatial MetadataFGDC-STD-001-1998NoneAcknowledgement of the National Wetlands Research Center as the metadata source would be appreciated. Please cite the original metadata when using portions of the record to create a similar record of slightly altered data, such as reprojection.